CN109668272A - Central air conditioner system refrigerating water pump progress control method and freezing pump controller - Google Patents
Central air conditioner system refrigerating water pump progress control method and freezing pump controller Download PDFInfo
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- CN109668272A CN109668272A CN201811510862.3A CN201811510862A CN109668272A CN 109668272 A CN109668272 A CN 109668272A CN 201811510862 A CN201811510862 A CN 201811510862A CN 109668272 A CN109668272 A CN 109668272A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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Abstract
The present invention provides a kind of central air conditioner system refrigerating water pump progress control method and freezing pump controllers, belong to central air conditioner system refrigerating water pump control field.The described method includes: calculating the controlling curve for obtaining freezing pump controller according to the maximum functional point of system operation and minimum operating point；The performance point data packet of refrigerating water pump at respective frequencies is obtained, and is stored in freezing pump controller；The supply backwater temperature difference of air-conditioner host water supply and return system is read, and calculates the difference of supply backwater temperature difference Yu the system standard temperature difference；Judge whether the difference is greater than preset value；If it is, based on supplemental characteristic and supply backwater temperature difference execution active control step in the controlling curve, the data packet；If it is not, then the supplemental characteristic in packet executes passive rate-determining steps based on the data.The present invention realizes active control with passively controlling the control mode combined, keeps central air conditioner system operation more efficient, also improves the stability of central air conditioner system.
Description
Technical field
The present invention relates to central air conditioner system refrigerating water pump control fields, more particularly, to a kind of central air conditioner system refrigerating water pump
Progress control method and freezing pump controller.
Background technique
Chilled water pump (hereinafter referred to as refrigerating water pump) is a freezing water circulation system, is generally used for the large-scale system such as central air-conditioning
In cool equipment.Existing freezing method for controlling pump mainly include the following types:
Temperature difference control: temperature difference control belongs to active control, but the influence vulnerable to environment temperature, and control precision is not high, reliability
It is low；There are certain hysteresis qualitys for system for temperature difference control, are also easy to produce concussion.
Female (supervisor) pipe pressure difference control: the good precision of the sensitivity of control is high, but cannot save because flow demand reduction is brought
Pipe resistance reduce, fractional energy savings is lower.
End-of-pipe control: although end-of-pipe control fractional energy savings is high, belonging to passivity control strategy in systems, i.e. only end
Adjusting influence can be just generated on system after having adjusting, not can solve flow demand caused by system host adjusting refrigerating capacity and changed,
It cannot be especially applicable in the system operation of cold-storage device (such as water cold storage, ice storage, phase change cold-storage), end-of-pipe control can not also
Eradicate the small not energy-efficient phenomenon of the big flow temperature difference.Therefore, all there is central hollow in the active control of refrigerating water pump or passive control mode
The lower problem of the stability of adjusting system.
Summary of the invention
In view of this, the main purpose of the present invention is to provide a kind of central air conditioner system refrigerating water pump progress control method and
Pump controller is freezed, by calculating the difference of supply backwater temperature difference and the system standard temperature difference, and judges the size of difference and preset value
Relationship realizes active control with passively controlling the control mode combined, keeps central air conditioner system operation more efficient, also mentions
The high stability of central air conditioner system.
In a first aspect, being applied to the embodiment of the invention provides a kind of central air conditioner system refrigerating water pump progress control method
Central air conditioner system freezes pump controller, comprising:
The controlling curve for obtaining freezing pump controller is calculated according to the maximum functional point of system operation and minimum operating point；
The performance point data packet of refrigerating water pump at respective frequencies is obtained, and is stored in freezing pump controller；
The supply backwater temperature difference of air-conditioner host water supply and return system is read, and calculates the difference of supply backwater temperature difference Yu the system standard temperature difference
Value；
Judge whether the difference is greater than preset value；
If it is, based in the controlling curve, the data packet supplemental characteristic and the supply backwater temperature difference execute
Active control step；
If it is not, then the supplemental characteristic in packet executes passive rate-determining steps based on the data.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein institute
The controlling curve for calculating according to the maximum functional point and minimum operating point of system operation and obtaining freezing pump controller is stated, it is specific to wrap
It includes:
According to, by all end branch tube valve openings, refrigerating water pump is according to design discharge Q after balancing pipelineAIt is corresponding when operation
Lift HAObtain maximum functional point (QA, HA)；
According to flow QARequired end pressure difference H when being 0BObtain minimum operating point (QB, HB)；
Maximum functional point (the Q run according to systemA, HA) and minimum operating point (QB, HB) calculate acquisition freezing pump controller
Controlling curve: H=kQ2+ b, whereinB=HB, Q is the real-time traffic of pump, and H, which is that real-time traffic is corresponding, to be raised
Journey.
With reference to first aspect, the embodiment of the invention provides second of possible embodiments of first aspect, wherein institute
Stating data packet includes the performance point data under each frequency that test for freeze pump obtains: flow, lift, power, revolving speed or efficiency.
With reference to first aspect, the embodiment of the invention provides the third possible embodiments of first aspect, wherein institute
Stating the system standard temperature difference is 3 DEG C to 8 DEG C.
With reference to first aspect, the embodiment of the invention provides the 4th kind of possible embodiments of first aspect, wherein institute
Stating preset value is 0.3 DEG C to 0.8 DEG C.
With reference to first aspect, the embodiment of the invention provides the 5th kind of possible embodiments of first aspect, wherein institute
Active control step is stated, is specifically included:
Read the realtime power P of the frequency converter to match with refrigerating water pump0With running frequency f0；
According to the realtime power P of frequency converter0With running frequency f0The revolving speed N of refrigerating water pump is calculated0；
Realtime power P is obtained from the data packet0With revolving speed N0Corresponding real-time traffic Q0；
According to following formula, required real-time traffic Q under the system standard temperature difference is calculated1；
Real-time traffic Q needed for obtaining is calculated according to the controlling curve of the freezing pump controller1Corresponding lift H1；
According to required real-time traffic Q1With lift H1Corresponding revolving speed N is obtained from the data packet1；
According to formula f1=N1/ 60 calculate the required frequency f of acquisition1, and frequency converter is controlled with frequency f1Control turning for refrigerating water pump
Speed.
With reference to first aspect, the embodiment of the invention provides the 6th kind of possible embodiments of first aspect, wherein institute
Passive rate-determining steps are stated, are specifically included:
If customer charge changes, the realtime power P of frequency converter is obtained2With frequency f2, and according to formula N2=f2×
60 obtain revolving speed N2；
According to P2And N2Corresponding real-time traffic Q is obtained from the data packet2；
Real-time traffic Q is calculated according to the controlling curve of the freezing pump controller2Corresponding lift H3；
According to real-time traffic Q2Corresponding lift H3Corresponding N is obtained from the data packet3；
According to N3It calculates and obtains f3And frequency f is pressed by frequency converter3Control the revolving speed of refrigerating water pump.
Second aspect, the embodiment of the invention provides a kind of central air conditioner systems to freeze pump controller, comprising:
First computing module, maximum functional point and minimum operating point for being run according to system calculate and obtain refrigerating water pump control
The controlling curve of device processed；
Module is obtained, for obtaining the performance point data packet of refrigerating water pump at respective frequencies, and is stored in refrigerating water pump control
In device；
Second computing module for reading the supply backwater temperature difference of air-conditioner host water supply and return system, and calculates supply backwater temperature difference
With the difference of the system standard temperature difference；
Judgment module, it is described whether greater than preset value for judging；
First execution module is used for when difference is greater than preset value, then based in the controlling curve, the data packet
Supplemental characteristic and the supply backwater temperature difference execute active control step；
Second execution module, for when difference is less than preset value, then the supplemental characteristic based on the data in packet to execute
Passive rate-determining steps.
The third aspect, the embodiment of the invention provides a kind of central air conditioner system refrigerating water pumps, including as described in second aspect
Freezing pump controller, motor and the frequency converter to match with refrigerating water pump.
Fourth aspect, the embodiment of the invention provides a kind of central air conditioner systems, including the freezing as described in the third aspect
Pump, air-conditioner host and air-conditioner host water supply and return system.
The embodiment of the present invention brings following the utility model has the advantages that the present invention provides a kind of central air conditioner systems to freeze pump operation
Control method and freezing pump controller.In the method, first according to the maximum functional point of system operation and minimum operating point meter
Calculate the controlling curve for obtaining freezing pump controller；Then the performance point data packet of refrigerating water pump at respective frequencies is obtained, and is stored
In freezing pump controller；The supply backwater temperature difference of air-conditioner host water supply and return system is read again, and calculates supply backwater temperature difference and system
The difference of the standard temperature difference；Judge whether the difference is greater than preset value；If it is, being based on the controlling curve, the data
Supplemental characteristic and the supply backwater temperature difference in packet execute active control step；If it is not, then the ginseng in wrapping based on the data
Number data execute passive rate-determining steps.This method judges difference by calculating the difference of supply backwater temperature difference and the system standard temperature difference
The size relation of value and preset value realizes and carries out what active control was combined with passive control to central air conditioner system refrigerating water pump
Control mode keeps central air conditioner system operation more efficient, also improves the stability of central air conditioner system.
Other features and advantages of the present invention will illustrate in the following description, alternatively, Partial Feature and advantage can be with
Deduce from specification or unambiguously determine, or by implementing above-mentioned technology of the invention it can be learnt that.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, better embodiment is cited below particularly, and match
Appended attached drawing is closed, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of central air conditioner system refrigerating water pump progress control method flow chart that the embodiment of the present invention one provides；
Fig. 2 is that a kind of central air conditioner system provided by Embodiment 2 of the present invention freezes pump operation controller architecture schematic diagram；
Fig. 3 is a kind of central air conditioner system structural schematic diagram that the embodiment of the present invention three provides；
Fig. 4 is the electronic devices structure figure that the embodiment of the present invention four provides.
Icon: 1- air-conditioner host；2- air-conditioner host water supply and return system；3- central air conditioner system refrigerating water pump；31- refrigerating water pump control
Device processed；The first computing module of 311-；312 obtain module；The second computing module of 313-；314- judgment module；315- first is executed
Module；The second execution module of 316-；32- frequency converter；33- motor；4- electronic equipment；41- processor；42 memories；43- communication
Interface；44- bus.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Currently, all there is central air conditioner system in the active control of central air conditioner system refrigerating water pump or passive control mode
The lower problem of stability.Based on this, a kind of central air conditioner system refrigerating water pump progress control method provided in an embodiment of the present invention
And freezing pump controller, it can be applied to the control to central air conditioner system refrigerating water pump.
It is cold to a kind of central air conditioner system disclosed in the embodiment of the present invention first for convenient for understanding the present embodiment
Freeze pump operation control method to describe in detail.
Embodiment one:
The embodiment of the invention provides a kind of central air conditioner system refrigerating water pump progress control methods, as shown in Figure 1, being applied to
Central air conditioner system freezes pump controller, method includes the following steps:
S101: the control for calculating acquisition freezing pump controller according to the maximum functional point of system operation and minimum operating point is bent
Line.
The flow lift data of the minimum and maximum operating point of refrigerating water pump, are calculated freezing when being run according to air-conditioning system
Pump controlling curve H=kQ2K value and b value in+b.
Above-mentioned steps S101, specifically includes the following steps:
S1011: according to, by all end branch tube valve openings, refrigerating water pump is according to design discharge Q after balancing pipelineAOperation
When corresponding lift HAObtain maximum functional point (QA, HA)。
Pipeline balance after by the valve opening of all end branch tubes, manually adjust the frequency of frequency converter, allow refrigerating water pump according to
The flow Q of designAOperation, records pump lift H at this timeA；By flow Q at this timeALift HAIt is input in controller (or PLC),
Maximum functional point (Q is run for systemA, HA)。
S1012: according to flow QARequired end pressure difference H when being 0BObtain minimum operating point (QB, HB)。
By flow be 0 when system needed for terminal pressure or pressure difference HBIt is input in controller (or PLC), is transported as system
Capable minimum operating point (QB, HB)。
S1013: the maximum functional point (Q run according to systemA, HA) and minimum operating point (QB, HB) calculate acquisition refrigerating water pump
The controlling curve of controller: H=kQ2+ b, whereinB=HB, Q is the real-time traffic of pump, and H is real-time traffic pair
The lift answered.
Bring the minimum and maximum operating point that system is run into controlling curve H=kQ respectively2In+b, it is calculatedB=HB, then the controlling curve for freezing pump controller also may indicate that are as follows:
Calculated conic section (formula) as the operation controlling curve of the system and is stored in freezing pump controller
In.
S102: obtaining the performance point data packet of refrigerating water pump at respective frequencies, and is stored in freezing pump controller.
In performance point data packet include test for freeze pump obtain each frequency under performance point data: flow Q, lift H,
Power P, revolving speed N or efficiency eta.
By pump out factory test obtain each frequency under performance point data (including flow Q, lift H, power P, revolving speed N, effect
Rate η etc.) one data packet of composition, it is inputted and is stored in controller (or PLC), constitute a big database.
S103: the supply backwater temperature difference of air-conditioner host water supply and return system is read, and calculates supply backwater temperature difference and system standard temperature
The difference of difference.
After system operation, controller (or PLC) reads and calculates the supply backwater temperature difference Δ of air-conditioner host chilled water system
Temperature difference T and the standard designed temperature difference of system are compared the Δ t that obtains a result by T.The system standard temperature difference can be set to 3 DEG C to 8
DEG C, preferably it is traditionally arranged to be 5 DEG C.
S104: judge whether difference is greater than preset value.
If so, thening follow the steps S105；If not, thening follow the steps S106.
Preset a preset value Δ t0, preset value Δ t0It can be set to 0.3 DEG C to 0.8 DEG C, preferred general setting
It is 0.5 DEG C.
S105: based on the supplemental characteristic and supply backwater temperature difference execution active control step in controlling curve, data packet.
Above-mentioned steps S105, specifically includes the following steps:
S1051: the realtime power P of the frequency converter to match with refrigerating water pump is read0With running frequency f0。
The realtime power P of matched frequency converter is read by freezing pump controller0With running frequency f0。
S1052: according to the realtime power P of frequency converter0With running frequency f0The revolving speed N of refrigerating water pump is calculated0。
Pump controller is freezed according to the realtime power P read0With running frequency f0, by running frequency f0According to N=f ×
60 calculate the revolving speed N of refrigerating water pump0。
S1053: realtime power P is obtained from data packet0With revolving speed N0Corresponding real-time traffic Q0。
According to the value P of realtime power and revolving speed0And N0, found out from the performance point data packet stored in freezing pump controller
P0And N0The Q of corresponding real-time traffic0Value.
Preferably, the real-time refrigerating capacity G of air-conditioning system can also be calculated according to formula G=Q/0.172, obtained real-time
After refrigerating capacity, the cooling water inflow of refrigerating water pump at this time can also be determined by the standard designed temperature difference of system, thoroughly avoids air-conditioning system
The chronic disease of system " the small temperature difference of big flow ".
S1054: according to following formula, required real-time traffic Q under the computing system standard temperature difference1。
According to the above formula, the required real-time traffic Q under the system standard temperature difference of setting is calculated1Value.
S1055: real-time traffic Q needed for obtaining is calculated according to the controlling curve of freezing pump controller1Corresponding lift H1。
Further according to the controlling curve of freezing pump controller, required real-time traffic Q under the computing system standard temperature difference1It is corresponding to raise
Journey H1Value.
S1056: according to required real-time traffic Q1With lift H1Corresponding revolving speed N is obtained from data packet1。
According to required real-time traffic Q under the system standard temperature difference of setting1Corresponding lift H1Value, stored from controller
Data packet in find out Q1And H1Corresponding revolving speed N1Value.
S1057: according to formula f1=N1/ 60 calculate the required frequency f of acquisition1, then press this frequency f1Pass through frequency converter control pump
Revolving speed.
According to formula f1=N1/ 60 calculate the required frequency f of acquisition1, frequency converter is then controlled with f by controller1It controls cold
Freeze the revolving speed of pump.
S106: passive rate-determining steps are executed based on the supplemental characteristic in data packet.
Above-mentioned steps S106, specifically includes the following steps:
S1061: if customer charge changes, the realtime power P of frequency converter is obtained2With frequency f2, and according to formula N2
=f2× 60 obtain revolving speed N2。
When system end demand (customer charge) changes, controller (or PLC) detects the real-time function of frequency converter
Rate P2With frequency f2, then according to formula N2=f2× 60 calculate acquisition revolving speed N2。
S1062: according to P2And N2Corresponding real-time traffic Q is obtained from data packet2。
According to the value P of realtime power and revolving speed2And N2, found out from the performance point data packet stored in freezing pump controller
P2And N2The Q of corresponding real-time traffic2Value.
S1063: real-time traffic Q is calculated according to the controlling curve of freezing pump controller2Corresponding lift H3。
According to the controlling curve of freezing pump controller storage, current real-time traffic Q is calculated2It is bent in the control of default
Under line, corresponding lift H3Value.
Because current real-time traffic and lift are (Q2, H2), in order to allow system to run according to the controlling curve of setting,
So system wants control system to move closer to controlling curve in deviation control curve, so to calculate in real-time traffic is Q2
When, lift H corresponding to system controlling curve3Value, so that control system is run according to controlling curve.
S1064: according to real-time traffic Q2Corresponding lift H3Corresponding N is obtained from data packet3。
According to required real-time traffic Q under the system standard temperature difference of setting2Corresponding lift H3Value, stored from controller
Data packet in find out Q2And H3Corresponding revolving speed N3Value.
S1065: according to N3It calculates and obtains f3And frequency f is pressed by frequency converter3Control the revolving speed of refrigerating water pump.
According to formula f3=N3/ 60 calculate the required frequency f of acquisition3, frequency converter is then controlled with f by controller3It controls cold
Freeze the revolving speed of pump.
The embodiment of the invention provides a kind of central air conditioner system refrigerating water pump progress control methods, by calculating for return water temperature
The difference of difference and the system standard temperature difference, and judge the size relation of difference and preset value, it realizes and central air conditioner system is freezed
Pump carries out active control with passively controlling the control mode combined, keeps central air conditioner system operation more efficient, also improves
The stability of central air conditioner system.
Embodiment two:
A kind of central air conditioner system provided in an embodiment of the present invention freezes pump controller, as shown in Figure 2, comprising:
First computing module 311, maximum functional point and minimum operating point for being run according to system are calculated and are freezed
The controlling curve of pump controller.The major function of first computing module 311 is, according to after pipeline is balanced by all end branch tubes
Valve opening, refrigerating water pump is according to design discharge QACorresponding lift H when operationAObtain maximum functional point (QA, HA)；According to flow QA
Required end pressure difference H when being 0BObtain minimum operating point (QB, HB)；Maximum functional point (the Q run according to systemA, HA) and it is minimum
Operating point (QB, HB) calculate the controlling curve for obtaining freezing pump controller: H=kQ2+ b, whereinB=HB, Q is
The real-time traffic of pump, H are the corresponding lift of real-time traffic.
Module 312 is obtained, for obtaining the performance point data packet of refrigerating water pump at respective frequencies, and is stored in refrigerating water pump control
In device processed.Obtain module 312 major function be, by pump out factory test obtain each frequency under performance point data (including stream
Measure Q, lift H, power P, revolving speed N, efficiency eta etc.) one data packet of composition, it is inputted and is stored in controller (or PLC), structure
At a big database.
Second computing module 313 for reading the supply backwater temperature difference of air-conditioner host water supply and return system, and is calculated for return water temperature
The difference of difference and the system standard temperature difference.After system operation, controller (or PLC) reads and calculates air-conditioner host chilled water system
Supply backwater temperature difference Δ T, temperature difference T and the comparison of the standard designed temperature difference of system are obtained a result Δ t.The system standard temperature difference can be with
3 DEG C to 8 DEG C are set as, is preferably traditionally arranged to be 5 DEG C.
Judgment module 314, for judging whether difference is greater than preset value.Preset a preset value Δ t0, preset value
Δt0It can be set to 0.3 DEG C to 0.8 DEG C, be preferably traditionally arranged to be 0.5 DEG C.Judge whether Δ t is greater than preset value Δ t0, such as
Fruit is then to enter the first execution module 315, if it is not, then into the second execution module 316.
First execution module 315 is used for when difference is greater than preset value, then based on the parameter in controlling curve, data packet
Data and supply backwater temperature difference execute active control step.The major function of first execution module 315 is to read and refrigerating water pump phase
The realtime power P for the frequency converter matched0With running frequency f0；According to the realtime power P of frequency converter0With running frequency f0It is calculated
The revolving speed N of refrigerating water pump0；Realtime power P is obtained from data packet0With revolving speed N0Corresponding real-time traffic Q0；According to following formula,
Required real-time traffic Q under the computing system standard temperature difference1。
Real-time traffic Q needed for obtaining is calculated according to the controlling curve of freezing pump controller1Corresponding lift H1；According to required
Real-time traffic Q1With lift H1Corresponding revolving speed N is obtained from data packet1；According to formula f1=N1/ 60 calculate the required frequency of acquisition
f1, then press this frequency f1Pass through the revolving speed of frequency converter control pump.
Second execution module 316, for when difference is less than preset value, then executing quilt based on the supplemental characteristic in data packet
Dynamic rate-determining steps.The major function of second execution module 316 is, if customer charge changes, obtains the real-time of frequency converter
Power P2With frequency f2, and according to formula N2=f2× 60 obtain revolving speed N2；According to P2And N2Corresponding reality is obtained from data packet
Shi Liuliang Q2；Real-time traffic Q is calculated according to the controlling curve of freezing pump controller2Corresponding lift H3；According to real-time traffic Q2It is right
The lift H answered3Corresponding N is obtained from data packet3；According to N3It calculates and obtains f3And frequency f is pressed by frequency converter3Control refrigerating water pump
Revolving speed.
A kind of central air conditioner system provided in an embodiment of the present invention freezes pump controller, in the offer of above-described embodiment one
Centre air-conditioning system refrigerating water pump progress control method technical characteristic having the same reaches so also can solve identical technical problem
To identical technical effect.
Embodiment three:
A kind of central air conditioner system provided in an embodiment of the present invention, as shown in Figure 3, comprising: air-conditioner host 1, air-conditioner host
Water supply and return system 2 and central air conditioner system refrigerating water pump 3.
Wherein, central air conditioner system refrigerating water pump 3, comprising: freezing pump controller 31, the motor provided such as above-described embodiment two
33 and the frequency converter 32 that matches with refrigerating water pump.
A kind of central air conditioner system provided in an embodiment of the present invention includes the refrigerating water pump control that above-described embodiment two provides
Device, the central air conditioner system refrigerating water pump progress control method technical characteristic having the same provided with above-described embodiment one, so
Also it can solve identical technical problem, reach identical technical effect.
Example IV:
A kind of electronic equipment provided in an embodiment of the present invention, as shown in figure 4, electronic equipment 4 includes processor 41, memory
42, the computer program that can be run on the processor is stored in the memory, the processor executes the calculating
The step of method that above-described embodiment one provides is realized when machine program.
Referring to fig. 4, electronic equipment further include: bus 44 and communication interface 43, processor 41, communication interface 43 and memory
42 are connected by bus 44.Processor 41 is for executing the executable module stored in memory 42, such as computer program.
Wherein, memory 42 may include high-speed random access memory (RAM, Random Access Memory),
It may further include nonvolatile memory (non-volatile memory), for example, at least a magnetic disk storage.By at least
One communication interface 43 (can be wired or wireless) realizes the communication between the system network element and at least one other network element
Connection, can be used internet, wide area network, local network, Metropolitan Area Network (MAN) etc..
Bus 44 can be isa bus, pci bus or eisa bus etc..The bus can be divided into address bus, data
Bus, control bus etc..Only to be indicated with a four-headed arrow convenient for indicating, in Fig. 4, it is not intended that an only bus or
A type of bus.
Wherein, memory 42 is for storing program, and the processor 41 executes the journey after receiving and executing instruction
Sequence, method performed by the device that the stream process that aforementioned any embodiment of the embodiment of the present invention discloses defines can be applied to handle
In device 41, or realized by processor 41.
Processor 41 may be a kind of IC chip, the processing capacity with signal.During realization, above-mentioned side
Each step of method can be completed by the integrated logic circuit of the hardware in processor 41 or the instruction of software form.Above-mentioned
Processor 41 can be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network
Processor (Network Processor, abbreviation NP) etc..It can also be digital signal processor (Digital Signal
Processing, abbreviation DSP), specific integrated circuit (Application Specific Integrated Circuit, referred to as
ASIC), ready-made programmable gate array (Field-Programmable Gate Array, abbreviation FPGA) or other are programmable
Logical device, discrete gate or transistor logic, discrete hardware components.It may be implemented or execute in the embodiment of the present invention
Disclosed each method, step and logic diagram.General processor can be microprocessor or the processor is also possible to appoint
What conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in hardware decoding processing
Device executes completion, or in decoding processor hardware and software module combination execute completion.Software module can be located at
Machine memory, flash memory, read-only memory, programmable read only memory or electrically erasable programmable memory, register etc. are originally
In the storage medium of field maturation.The storage medium is located at memory 42, and processor 41 reads the information in memory 42, in conjunction with
Its hardware completes the step of above method.
Embodiment five:
It is provided in an embodiment of the present invention it is a kind of with processor can be performed non-volatile program code it is computer-readable
Medium, the method that said program code makes the processor execute the offer of above-described embodiment one.
Unless specifically stated otherwise, the opposite step of the component and step that otherwise illustrate in these embodiments, digital table
It is not limit the scope of the invention up to formula and numerical value.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In all examples being illustrated and described herein, any occurrence should be construed as merely illustratively, without
It is as limitation, therefore, other examples of exemplary embodiment can have different values.
The flow chart and block diagram in the drawings show the system of multiple embodiments according to the present invention, method and computer journeys
The architecture, function and operation in the cards of sequence product.In this regard, each box in flowchart or block diagram can generation
A part of one module, section or code of table, a part of the module, section or code include one or more use
The executable instruction of the logic function as defined in realizing.It should also be noted that in some implementations as replacements, being marked in box
The function of note can also occur in a different order than that indicated in the drawings.For example, two continuous boxes can actually base
Originally it is performed in parallel, they can also be executed in the opposite order sometimes, and this depends on the function involved.It is also noted that
It is the combination of each box in block diagram and or flow chart and the box in block diagram and or flow chart, can uses and execute rule
The dedicated hardware based system of fixed function or movement is realized, or can use the group of specialized hardware and computer instruction
It closes to realize.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with
It realizes by another way.The apparatus embodiments described above are merely exemplary, for example, the division of the unit,
Only a kind of logical function partition, there may be another division manner in actual implementation, in another example, multiple units or components can
To combine or be desirably integrated into another system, or some features can be ignored or not executed.Another point, it is shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be through some communication interfaces, device or unit it is indirect
Coupling or communication connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of central air conditioner system refrigerating water pump progress control method, which is characterized in that be applied to central air conditioner system refrigerating water pump
Controller, comprising:
The controlling curve for obtaining freezing pump controller is calculated according to the maximum functional point of system operation and minimum operating point；
The performance point data packet of refrigerating water pump at respective frequencies is obtained, and is stored in freezing pump controller；
The supply backwater temperature difference of air-conditioner host water supply and return system is read, and calculates the difference of supply backwater temperature difference Yu the system standard temperature difference；
Judge whether the difference is greater than preset value；
If it is, based in the controlling curve, the data packet supplemental characteristic and the supply backwater temperature difference execute active
Rate-determining steps；
If it is not, then the supplemental characteristic in packet executes passive rate-determining steps based on the data.
2. method according to claim 1, which is characterized in that the maximum functional point according to system operation and minimum work
Point calculates the controlling curve for obtaining freezing pump controller, specifically includes:
According to, by all end branch tube valve openings, refrigerating water pump is according to design discharge Q after balancing pipelineAIt is corresponding when operation to raise
Journey HAObtain maximum functional point (QA, HA)；
According to flow QARequired end pressure difference H when being 0BObtain minimum operating point (QB, HB)；
Maximum functional point (the Q run according to systemA, HA) and minimum operating point (QB, HB) calculate the control for obtaining freezing pump controller
Koji-making line: H=kQ2+ b, whereinB=HB, Q is the real-time traffic of pump, and H is the corresponding lift of real-time traffic.
3. method according to claim 1, which is characterized in that the data packet includes each frequency that test for freeze pump obtains
Under performance point data: flow, lift, power, revolving speed or efficiency.
4. method according to claim 1, which is characterized in that the system standard temperature difference is 3 DEG C to 8 DEG C.
5. method according to claim 1, which is characterized in that the preset value is 0.3 DEG C to 0.8 DEG C.
6. method according to claim 1, which is characterized in that the active control step specifically includes:
Read the realtime power P of the frequency converter to match with refrigerating water pump0With running frequency f0；
According to the realtime power P of frequency converter0With running frequency f0The revolving speed N of refrigerating water pump is calculated0；
Realtime power P is obtained from the data packet0With revolving speed N0Corresponding real-time traffic Q0；
According to following formula, required real-time traffic Q under the system standard temperature difference is calculated1；
Real-time traffic Q needed for obtaining is calculated according to the controlling curve of the freezing pump controller1Corresponding lift H1；
According to required real-time traffic Q1With lift H1Corresponding revolving speed N is obtained from the data packet1；
According to formula f1=N1/ 60 calculate the required frequency f of acquisition1, and frequency converter is controlled with frequency f1Control the revolving speed of refrigerating water pump.
7. method according to claim 1, which is characterized in that the passive rate-determining steps specifically include:
If customer charge changes, the realtime power P of frequency converter is obtained2With frequency f2, and according to formula N2=f2× 60 obtain
Obtain revolving speed N2；
According to P2And N2Corresponding real-time traffic Q is obtained from the data packet2；
Real-time traffic Q is calculated according to the controlling curve of the freezing pump controller2Corresponding lift H3；
According to real-time traffic Q2Corresponding lift H3Corresponding N is obtained from the data packet3；
According to N3It calculates and obtains f3And frequency f is pressed by frequency converter3Control the revolving speed of refrigerating water pump.
8. a kind of central air conditioner system freezes pump controller characterized by comprising
First computing module, maximum functional point and minimum operating point for being run according to system, which calculate, obtains freezing pump controller
Controlling curve；
Module is obtained, for obtaining the performance point data packet of refrigerating water pump at respective frequencies, and is stored in freezing pump controller；
Second computing module for reading the supply backwater temperature difference of air-conditioner host water supply and return system, and calculates supply backwater temperature difference and is
The difference of the system standard temperature difference；
Judgment module, it is described whether greater than preset value for judging；
First execution module is used for when difference is greater than preset value, then based on the parameter in the controlling curve, the data packet
Data and the supply backwater temperature difference execute active control step；
Second execution module, for when difference is less than preset value, then the supplemental characteristic based on the data in packet to execute passive
Rate-determining steps.
9. a kind of central air conditioner system refrigerating water pump, which is characterized in that including freezing pump controller, electricity as claimed in claim 8
Machine and the frequency converter to match with refrigerating water pump.
10. a kind of central air conditioner system, which is characterized in that including refrigerating water pump as claimed in claim 9, air-conditioner host and air-conditioning
Host water supply and return system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811510862.3A CN109668272B (en) | 2018-12-11 | 2018-12-11 | Running control method for freezing pump of central air-conditioning system and freezing pump controller |
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| CN201811510862.3A CN109668272B (en) | 2018-12-11 | 2018-12-11 | Running control method for freezing pump of central air-conditioning system and freezing pump controller |
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| CN109668272B CN109668272B (en) | 2021-02-19 |
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| JPH04165242A (en) * | 1990-10-29 | 1992-06-11 | Takasago Thermal Eng Co Ltd | Variable water flow control method in aqueous heat source air conditioner |
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| CN104729009A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | air conditioner control method and device |
| CN107166633A (en) * | 2017-04-25 | 2017-09-15 | 爱恒能源科技（上海）有限公司 | Computer room operation energy consumption real-time monitoring and regulating method |
| CN108775661A (en) * | 2018-07-12 | 2018-11-09 | 珠海格力电器股份有限公司 | Frequency adjusting method and device of chilled water pump and air conditioning system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04165242A (en) * | 1990-10-29 | 1992-06-11 | Takasago Thermal Eng Co Ltd | Variable water flow control method in aqueous heat source air conditioner |
| CN201964577U (en) * | 2010-12-31 | 2011-09-07 | 深圳益华鑫能科技开发有限公司 | Energy-saving control system for central air conditioner |
| CN202250763U (en) * | 2011-10-19 | 2012-05-30 | 山东三江电子工程有限公司 | Intelligent constant temperature difference energy-saving control system for air-conditioning water pump |
| CN104729009A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | air conditioner control method and device |
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| CN109668272B (en) | 2021-02-19 |
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